function showpic(el, img_key) 
{ 
var src = el; 
var minipic = img_key;


var bild = document.images['show']; 
var bild_mini = document.images[img_key]; 
var oldpic = bild.src

if(bild) bild.src = src; 
bild_mini.src=oldpic;

document.getElementById(img_key).onclick=function evt()  {showpic(bild_mini.src,img_key)};



}

function goback(sonsturl) {
 if (history.length > 0) {
   history.back ();
 } else {
   window.location.href(sonsturl);
 }
}


	function kat1_change(id)
	{
		new Ajax.Request('return.php?id='+id+'&wg_id=' + (document.beratungsassistent.wg_id.value), {method: 'get', onComplete: GetKat2});	
	}

	function GetKat2(originalRequest)
	{	
		document.getElementById("pkat2").innerHTML = originalRequest.responseText
	}
	
	function kat2_change(id)
	{
		new Ajax.Request('return.php?id='+id+'&wg_id=' + (document.beratungsassistent.wg_id.value), {method: 'get', onComplete: GetKat3});	
	}

	function GetKat3(originalRequest)
	{	
		document.getElementById("pkat3").innerHTML = originalRequest.responseText
	}
	
	function kat3_change(id)
	{
		new Ajax.Request('return.php?id='+id+'&wg_id=' + (document.beratungsassistent.wg_id.value), {method: 'get', onComplete: GetKat4});	
	}

	function GetKat4(originalRequest)
	{	
		document.getElementById("pkat4").innerHTML = originalRequest.responseText
	}